In the same visit, a blood sample was obtained from each participant by means of venopuncture using a vacutainer containing anticoagulant EDTA K3 (ethylene diamine teraacetic acid).
Blood lead levels are considered the best indicators for the degree of actual exposure (Silbergeld, 1990).
The majority (63%) of its inhabitants are potters who work with especially high levels of lead oxide to produce its renowned green-tint.
There has been great resistance to changing to lead-free enamel and public health officials have been very skeptical regarding the health consequences of lead exposure.
Here it was concluded that the occupational exposure to lead was greater among the subjects involved in the hand painting stage, typically women and children (Olaiz et al., 1997).Many rural populations in Mexico are totally or partially economically dependent upon the ceramic industry, in which lead salts are commonly used and have been since the arrival of the Spanish 400 years ago.Santa Maria Atzompa, a rural low-income community located 10 km outside of Oaxaca City, has been of particular interest in this context as the region has long produced a unique style of pottery with a highly glazed, green-tint that is country-renowned.Lead intoxication risks were studied in a community of ceramic folk art workers in Oaxaca, a southern state of Mexico, where the manufacture of low-temperature lead ceramic ware is a family tradition and often the only source of income.Variables such as household characteristics, occupation, and lead exposure risk factors were explored.The relationship between exposure and blood lead levels constitutes a dynamic process in which the blood lead concentrations are the product of recent exposure, excretion, and its balance in tissues.